Abstract
The utility of the Information/Orientation (IO) subtest of the Wechsler Memory Scale-Revised in identifying insufficient effort was examined. Performances of 50 benefit-seeking patients were compared to previously generated norms based on a clinical sample. Of the 50 benefit-seeking patients, 6 (12%) had IO scores that were outside the performance ranges of the entire clinical sample. An additional 6 of 50 (24%) had performances that were comparable to less than 2% of the normative sample. These results are consistent with previously published estimates of insufficient effort base rates in benefit-seeking populations and demonstrate the utility of IO as an indicator of suspicion of insufficient effort.